肺结核外科治疗的适应证是() A.初治的空洞型肺结核 B.24小时咯血超过600ml

题型:多项选择题

问题:

肺结核外科治疗的适应证是()

A.初治的空洞型肺结核

B.24小时咯血超过600ml,内科治疗无效

C.结核性脓胸合并支气管胸膜瘘,对侧活动性肺结核

D.无症状结核瘤,化疗后无变化

E.毁损肺

考点:广西外科住院医师规范化培训心胸外科综合练习心胸外科综合练习题库
题型:多项选择题

一列横波波速v=40cm/s,在某一时刻的波形如图所示,在这一时刻质点A振动的速度方向沿y轴正方向.求:

(1)这列波的频率、周期和传播方向;

(2)从这一时刻起在0.5s内质点B运动的路程和位移.

题型:多项选择题

下列图象与所述实验相符的是(  )

ABCD
向一定量锌粒中加入过量稀硫酸向一定量氯化铵饱和溶液中不断加入水t℃时,向一定量不饱和的硝酸钾溶液中不断加入硝酸钾晶体向一定量氢氧化钠和氢氧化钡的混合溶液中加入稀硫酸

A.A

B.B

C.C

D.D

题型:多项选择题

阅读理解。

     John H. Johnson was born in a black family in Arkansas City in 1918. His father died in an accident

when John was six. He was reaching high school age, but his hometown offered no high school for blacks.

     Fortunately (幸运地) he had a strong-willed, caring mother. John remembers that his mother told him

many times, "Son, you can be anything you really want to be if you just believe." She told him not to be

dependent on others, including his mother. "You have to earn success," said she. "All the people who work

hard don't succeed, but the only people who do succeed are those who work hard."

    These words came from a woman with less than a third-grade education.She worked hard as a cook for

two years to save enough money to take her son-then 15-to Chicago.

     Chicago in 1933 was not the promised land (乐土) that black southerners were looking for. John's

mother and stepfather could not find work. But here John could go to school, and here he learned the power

of words-as an editor (编辑) of the newspaper at Du Sable High School. His wish was to publish a magazine

for the blacks.

     While others discouraged him, John's mother offered him more words to live by: "Nothing beats a failure

but a try." She also let him pawn (典当) her furniture to get the $500 he needed to start the Negro magazine.

     It is natural the difficulties and failures followed John closely until he became very successful. He always

keeps his mother's words in mind: "Son, failure is not in your vocabulary." Now John H. Johnson is one of

the 400 richest people in America.

1. Why did John's mother decide to move to Chicago? Because           . [ ]

A. John's father died in his hometown when John was very young

B. life was too hard for them to stay on in their hometown, while life in Chicago would be better for them

    Negroes

C. there were no schools in their hometown

D. John needed more education and he could go to high school there

2. What's the best title of the passage? [ ]

A.How John H. Johnson became somebody

B.The mental (精神的) support from a great mother

C.The importance of a good education

D.The key to success for blacks

3. The underlined sentence in the fifth paragraph means           . [ ]

A. if you try, you will succeed in the end

B. a failure is difficult to beat, even if you try

C. a try is always followed by a failure

D. nothing but a try can help you out of failure

题型:多项选择题

有V、W、X、Y、Z五种短周期元素,原子序数依次增大.X是短周期中原子半径最大的主族元素,V的单质常温常压下最轻的气体,V和W可以形成V2W和V2W2两种化合物,W和Z为同主族元素,Y最外层电子数与电子层数相等.

(1)五种元素中按照主族归类,无同一主族元素的是______;

(2)W和X形成原子个数比为1:1的化合物的电子式为______;

(3)已知V有三种常见同位素(zzV、zz+1V、zz+2V),W有常见的两种同位素(a2aW、a2a+2W)则V2W分子有______种,这些分子的相对分子质量有______种不同数值;

(4)Z的单质有Z2、Z4、Z6、Z8等形式,它们之间的关系属于______;

(5)最近日本福岛核电站泄漏的放射性核素铯-137,它的原子序数为55,铯位于元素周期表第______周期第______族;

(6)V、W、X、Z可以形成含有相同四种元素且能相互反应的两种化合物,该反应的离子方程式为______.

题型:多项选择题

与发行股票相比,企业通过发行债券筹集资金的特点包括()。

A.企业的融资风险低

B.企业少纳所得税

C.企业筹资的资金成本较高

D.可降低企业的负债比率

E.企业原有投资者的控制权不变

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